#include<stdio.h>
#include<unistd.h>

int main()
{
    printf("我是父进程！\n");
    pid_t id =fork();
    if(id<0)
    {
        printf("创建子进程失败！\n");
        return 1;
    }
    else if(id ==0)
    {
        while(1)
        {
            printf("我是子进程：pid：%d，ppid:%d\n",getpid(),getppid());
            sleep(1);
        }
    }
    else 
    {
         while(1)
        {
            printf("我是父进程：pid：%d，ppid:%d\n",getpid(),getppid());
            sleep(1);
        }
        
    }
    return 0;
}
